Heat dissipation device and heat dissipation method of vehicle-mounted liquid cooling system

Abstract

The invention provides a heat dissipation device and a heat dissipation method of a vehicle-mounted liquid cooling system. The heat dissipation device comprises a liquid tank (2), a top cover (1) covering the upper surface of the liquid tank, and an air bellow located below the liquid tank. The liquid tank is used for communicating with a circulation pipeline of cooling liquid, the top cover and the upper surface of the liquid tank jointly define a running air channel for running air of a vehicle to pass through, a plurality of parallel first heat dissipation plates connected with the upper surface of the liquid tank are arranged in the running air channel, and the first heat dissipation plates are arranged in the extending direction of the running air channel. A plurality of parallel second heat dissipation plates connected with the lower surface of the liquid tank are arranged in the air bellow, the second heat dissipation plates are arranged in the direction perpendicular to the first heat dissipation plates, the air inlet of the air bellow is located in the bottom face, the air outlet of the air bellow is located in the side face corresponding to the ends of the second heat dissipation plates, and a draught fan (3) is arranged at the air outlet. By adopting the heat dissipation device provided by the invention, the degree of dependence on the heat dissipation fan can be reduced, the energy consumption can be reduced, and the excessive noise of the fan can be avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle cooling systems, in particular to a heat dissipation device and a heat dissipation method for a vehicle liquid cooling system. Background technique [0002] Some high-power devices on vehicles, such as on-board energy storage devices (lithium batteries or fuel cells), traction motors, etc., will generate a lot of heat during work, and most of them are cooled by liquid cooling. In the current vehicle-mounted liquid cooling system, the coolant flows through the object to be cooled and then flows into the cooling water tank, while the cooling fan forces air to cool the cooling water tank to dissipate heat, and then the coolant in the cooling water tank flows back to the object to be cooled, so , through the circulating flow of cooling liquid to dissipate heat for the object to be cooled. [0003] The current vehicle-mounted liquid cooling system has the following deficiencies: a. In view of the larg...

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Problems solved by technology

[0003] The current vehicle-mounted liquid cooling system has the following deficiencies: a. In view of the large demand for heat dissipation, it can only be solved by increasing the power and size of the heat dissipation fan, which will cause increased energy consumption; b. In order to improve heat dissipation Efficiency, it is often necessary to increase the speed of the fan, and this will cause the noise of the fan to be loud when it is working, which is not conducive to vehicle noise control; c. It is highly dependent on the cooling fan. Once the cooling fan fails, the cooled object will be affected by the temperature. too high to work

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